GEOG 170A1 Lecture 2: Geog101Vocab2
28 Jan 2019
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Identify the following terms in the context of this class. Direction of wind flow, measured as a clockwise angle from due north. An imaginary deflective force arising from earth s rotation that is necessary to account for motions measured relative to the surface. A region of low pressure relative to the surrounding area. Force that acts to slow wind but does not change its direction. Friction develops between the atmosphere and surface and between layers of air moving at different velocities. An idealized condition in which the upper-level air flows at constant speed and direction, parallel to straight isobars. There is no acceleration in geostrophic flow, and frictional forces are negligible. Horizontal frictionless flow in which isobars and streamlines coincide, or equivalently, in which the tangential acceleration is everywhere zero. When the vertical pressure gradient force is balanced by the force of gravity. Because the forces balance, there is no acceleration upward or downward.
